1. Guns

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. 5 January 1976. 50 min

Armed robbery is becoming almost a daily event and sooner or later somebody's bound to get hurt. But what happens if the police meet violence with violence?

2. Manslaughter

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. 12 January 1976. 50 min

The public expect to be protected by the police. But if a policeman kills a member of the public in the execution of his duty, will the protector be prosecuted?

3. Prisoner

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. 19 January 1976. 50 min

When a constable is ten minutes late reporting in an alert goes out. Alec Quilley hasn't been seen or heard of for over an hour.

4. The Frighteners

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. 26 January 1976. 50 min

An ex-villain is entitled to police protection just like anyone else - isn't he?

5. Contact

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. 2 February 1976. 50 min

A man is trapped under a load of dangerous chemicals. Move him, and the lot might go up. Leave him there and...

6. Kidnap

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. 9 February 1976. 50 min

A rag week kidnap for charity starts out all right, but...

7. Say Goodbye To The Horses

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. 16 February 1976. 50 min

There are plenty of ways to make sure a horse loses a race, but how do you make a horse WIN a race?

8. A Preacher In Passing

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. 23 February 1976. 50 min

A quiet Sunday and Moffat finds himself in church. But not praying!

9. Nightwatch

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. 1 March 1976. 50 min

Keeping surveillance on a goods yard full of empty wagons seems a pretty barren exercise - unless you know what's at stake.

10. Ringers

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. 8 March 1976. 50 min

In detection you need routine and instinct. But not necessarily in that order.

11. Fairground

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. 15 March 1976. 50 min

A young girl is attacked and Lynch has to look into 'all the fun of the fair'.

12. Hunch

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. 22 March 1976. 50 min

Which is more important - a batch of missing cameras, or a missing girl?

13. Scot Free

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. 29 March 1976. 50 min

Two boys are trapped in a disused mine. Why is their friend terrified of going to the police?

19. Transit

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. 10 February 1975

A mystery call out for noise down the docks perplexes Yates, and he's stuck there with DS Haggar and an irritating PC. They shoot horses, don't they?

24. Thanks But... No Thanks

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. 17 February 1975

Quilley is up for promotion, but personal circumstances may hinder his path. At the same time, a troublesome thief is causing him severe problems.

31. A New Broom

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. 12 May 1975

A series of break-ins have some peculiar traits. Haggar thinks that an old lag just out of gaol may be responsible. But what is the significance of a missing schoolboy, and why is the MO of the mystery criminal familiar?